64640720

素因数分解:

$2^4\times 5^1\times {\mathrm{277}}^1\times {\mathrm{2917}}^1$

素因数の和:3207

約数の個数: 40

約数和(自身を含む): 150883944

約数和(自身を除く): 86243224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 277, 554, 1108, 1385, 2216, 2770, 2917, 4432, 5540, 5834, 11080, 11668, 14585, 22160, 23336, 29170, 46672, 58340, 116680, 233360, 808009, 1616018, 3232036, 4040045, 6464072, 8080090, 12928144, 16160180, 32320360, 64640720]

約数ペア:

[(1, 64640720), (2, 32320360), (4, 16160180), (5, 12928144), (8, 8080090), (10, 6464072), (16, 4040045), (20, 3232036), (40, 1616018), (80, 808009), (277, 233360), (554, 116680), (1108, 58340), (1385, 46672), (2216, 29170), (2770, 23336), (2917, 22160), (4432, 14585), (5540, 11668), (5834, 11080)]